Smart locks that afford easy keyless access to a home or office can be hacked, and can a pain to install. But what if you put the smarts in a case for a traditional key? Locky, which does just that, promises help for people who want to check whether a door is locked, or locate misplaced keys.

A KickStarter project that achieved full funding in just a couple of hours, Locky consists of a key case that communicates via Bluetooth to a smartphone app. Just slip the top of the key (the part that doesn't go into the lock) into the case, pair it with the app, and you're good to go.

There's also no need to change your key use habits: The bottom of the key folds into the case much the way a pocket knife swivels shut, keeping sharp key edges from scratching purses or clothes.